Class: Kojn::Ipn

Inherits:
Object
  • Object
show all
Defined in:
lib/kojn/ipn.rb

Constant Summary collapse

ENCRYPTION = 
1
INTEGRITY = 
2

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params) ⇒ Ipn

Returns a new instance of Ipn.



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# File 'lib/kojn/ipn.rb', line 8

def initialize params
  self.content = params

  self.ensure_secure(params)

  if params['token']
    self.mode = Kojn::Ipn::INTEGRITY
    self.invoice = params['invoice']
    self.token = params['token']

    raise AuthenticityException.new("ERROR -*- IPN Could not be verified. Please notify Kojn authors. This message has been fabricated. -*- ERROR") unless self.authentic?
  elsif params['iv']
    self.mode = Kojn::Ipn::ENCRYPTION
    self.decrypt
  end

  # Create a real object.
  self.invoice = Kojn::Invoice.new(self.invoice)
end

Instance Attribute Details

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/kojn/ipn.rb', line 6

def content
  @content
end

#invoice ⇒ Object

Returns the value of attribute invoice.



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# File 'lib/kojn/ipn.rb', line 6

def invoice
  @invoice
end

#mode ⇒ Object

Returns the value of attribute mode.



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# File 'lib/kojn/ipn.rb', line 6

def mode
  @mode
end

#token ⇒ Object

Returns the value of attribute token.



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# File 'lib/kojn/ipn.rb', line 6

def token
  @token
end

Instance Method Details

#authentic? ⇒ Boolean

Returns:

  • (Boolean)

Raises:



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# File 'lib/kojn/ipn.rb', line 28

def authentic?
  raise AuthenticityException.new("Checking if message is authentic while mode is set to Encryption") unless self.mode == Kojn::Ipn::INTEGRITY

  sha = Digest::SHA2.hexdigest "#{Kojn.api_key}#{self.invoice['internal_id']}#{self.invoice['received_amount']}"
  Rails.logger.info "sha: #{sha} tokne: #{self.token}"

  sha == self.token
end

#decrypt ⇒ Object 



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# File 'lib/kojn/ipn.rb', line 37

def decrypt
  self.invoice = Kojn::crypto.decrypt_params(self.content)
end

#ensure_secure(params) ⇒ Object 



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# File 'lib/kojn/ipn.rb', line 41

def ensure_secure(params)
  if (params['token'] && Kojn.ipn_sec == :integrity) || (params['iv'] && Kojn.ipn_sec == :encryption)
    true
  else
    raise Kojn::AuthenticityException.new("ERROR -*- IPN security expected: #{Kojn.ipn_sec}. Opposite was found. -*- ERROR")
  end
end